docs: fix broken links in CONTRIBUTING.md

[k3yss]

Description

Fix broken links pointing to https://github.com/revert/revert instead of https://github.com/revertinc/revert in CONTRIBUTING.md

Type of change

Please delete options that are not relevant.

• [x] This change requires a documentation update

How Has This Been Tested?

I can access the open the desired links instead of a 404 error.

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings

[vercel[bot]]

@k3yss is attempting to deploy a commit to the Revertdev Team on Vercel.

A member of the Team first needs to authorize it.

[github-actions[bot]]

Thank you for following the naming conventions for pull request titles! 🙏

[vercel[bot]]

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Name	Status	Preview	Comments	Updated (UTC)
revert-client	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 26, 2024 11:08am

[jatinsandilya]

Thanks @k3yss for this contribution! 🙏🏼